Question

Two small identical speakers are connected (in phase) to the same source. One speakers is 1.67...

Two small identical speakers are connected (in phase) to the same source. One speakers is 1.67 m and the other is 6.28 meters away from the observer. What is the longest wavelength the observer will hear the least (most quiet)?

If you could please explain each step and variable that would be wonderful! Thank you!

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Answer #1

least (most quiet) in the questions means we need to find wavelength for destructive interference.

The basic requirement for destructive interference is that the two waves are shifted by half a wavelength.

This means that the path difference for the two waves must be

L = / 2

6.28 - 1.67 = / 2

= 2 ( 6.28 - 1.67 )

= 9.22 meters

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